Safety supporting apparatus.



No. 718,948. PATENTED JAN. 20, 1903. J. K. GREEN.

SAFETY SUPPORTING APPARATUS.

APPLICATION FILED APB. 16, 1902. no MODEL. 2 SHEETS-SHEET 1.

ML- dknldreemper PATBNTED JAN. 20, 1903.

J. K. GREEN. SAFETY SUPPORTING APPARATUS.

APPLIOATIOR FILED APR. 16, 1902.

N0 MODEL. 4 2 SHEETS-SHEET 2.

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JOHN K. GREEN, OF NEW YORK, N. Y.

SAFETY SUPPORTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 718,948, dated January20, 1903.

Application filed April 16, 1902- To ctZl whom it may concern.-

Be it known that I, JOHN K. GREEN, a citizen of the United States,residing at 144 West Eighty-second street, New York, county of New York,State of New York, have invented certain new and useful Improvements inSafety SupportingApparatus, fully described and represented in thefollowing specification and the accompanying drawings, forming a part ofthe same.

The object of the present invention is to furnish an improved clip orfastener for securing a safety apparatus detachably to a fixed point,and also in the combination, with such clip or fastener, of a safetystrap and belt adapted especially to support a workman upon the outsideof a Window, as when cleaning or repairing the same. In a belt forwindowcleaners it has been common heretofore to furnish the ends of thebelt-strap with slotted plates adapted each to engage a couple ofbolt-heads projected from the window-frame, the accidental displacementof the slotted plate from the bolt-heads being prevented by a springupon the plate. Such spring is liable to become broken and often doesbecome broken in practice, and nothing then prevents the accidentalrelease of the plate from the bolt-heads by any upward blow or force.

It is one object of the present invention to construct a clip in suchmanner that only one bolt is required to hold it securely to the fixedsupport, audits connection with the bolthead is such that it cannot beaccidentally dislodged from the same, but requires a series of movementsto disengage it, which cannot be imparted to it by accident. Where theclip is used in connection with a workmans bolt, 2. single bolt isprovided upon each side of the window-frame, and two of the clips toengage such bolts are connected by a strap which Ireinforce by means ofa flexible 1n etallic band. The metallic band is extended (with thestrap) through links which connect the strap to the clip and folded overwith the strap and secured firmly to hold the strap to the link. Thefold is commonly secured at one end by rivets and is secured adjustablyat the opposite end by means of a buckle. To furnish a double securityand prevent loss of life through the breaking of a single$erialNo.103,138. (N0 model.)

buckle, I extend the strap and metallic band through two buckles, so asto secure absolute safety. The belt is furnished with metallic loops,through which the strap is extended, and such loops are made ofsufficient strength to support each the entire Weight of the workman incase the band is broken by any accident from one of the clips. The beltis furnished with a tongue and buckled to secure it upon the workmanswaist, and to furnish security from accident in case one buckle shouldbreak I provide two buckles upon the belt and I arrange the holes in thebuckles to engage the pin-tongues of both buckles simultaneously, thusobtaining absolute safety in the securing of the belt.

In the annexed drawings, Figure 1 is a perspective view of the belt andits fastenings. Fig. 2 is a longitudinal section of the clip attached tothe bolt, with dotted line 2 2 indicating the face of the Woodwork inwhich the bolt is secured. Fig. 3 shows the under side of the clip; Fig.4, a cross-section on line a: 00 in Fig. 2; Fig 5, the head of the bolt;Fig. 6, a diagram showing the disengagement of the clip from the bolt,and Fig. 7 a cross-section of the clip with bolt-head in its channel.Figs. 8 and 9 show the strengthening-band for strap B. Fig. 10 is a viewlike Fig. 3, showing an alternative location for the slot-opening.

In Fig. 1 the clips (marked A) are shown attached to window-frame bars II and connected with the strap B by links 0, and the belt D is providedwith the loops E, through which the strap is extended. Each of the loopsis made of sufficient strength and suitably fastened to the belt tosustain the whole weight of the operator if the strap should becomedetached from either of the clips and should slip in the loops until thebuckle or fold at the end of the strap should prevent further movement.The strap is provided with two buckles F and F, and the holes in the endof the strap would be spaced at the same distance apart as thepin-tongues of the ble flat ribbon K, as shown in Figs. 1 and 8, such asis already well known, and made with special flexibility, in which casethe band may be secured to one side of the strap, as shown in Fig. 8,and extended through the eye of the link 0 with the strap B and secured,as well as the strap, by the rivets B. The metallic band would also beextended with the strap through the buckles F F and punched, like thestrap, to fit the pin-tongues of the buckles. The metallic band may alsobe made of round wires K, as shown in Fig. 9, in which case the strapwould be formed of two layers of leather or fabric secured together withthe wires in grooves between them, the arrangement of the wires near theopposite edges of the strap permitting the holes for the buckle-tonguesto clear the wires.

Where wires are used,they are securely fastened at the ends of thestrap, so as not to pull out from between the layers. Such reinforcementof the strap greatly increases its strength and reduces the liability tothe loss of security by age and wear, which would affect leather orcanvas more rapidly than metal. The belt and the supporting-strap arethus made absolutely safe to support the workman.

I I designate the opposite sides of a window-frame, and J a bolt thereinhaving head J of greater width across the corners than the sides, asshown in Fig. 5. Such form is secured, with the construction shown inthe drawings, by making a round head with opposite sidesj flattened.

The clip (designated A in Fig. 1) is shown with eye a at one end toengage a link O or any other required connection. The clip is formedwith flat sides a and bottom b, having longitudinal slot 0 to clear theneck of the bolt. The slot opens into the channel betweenthe sides a andis closed at both ends and the sides a arranged to just clear theparallel sidesj of the bolt-head. An expansion of the channel is made atthe end of the slot opposite to the eye a to form a socket e ofsufiicient width to turn freely upon the entire bolt-head, and the clipis thus prevented from turning when fitted upon the bolthead, except theclip is moved to bring the socket e over the bolt-head. At the end ofthe slot opposite the socket e a lateral opening is provided todischarge the bolt-head from the slot, and such opening may be made inone of the sides a, as shown in full lines atf in Fig. 2, or in thebottom plate of the clip, as shown in Fig. 10, where the opening (markedf) is made circular to admit the head of the bolt. Where the openingf ismade in the side a, a transverse slot 0 is required to extend from theslot 0 to the lateral opening f; but the opening f when formed in thebottom of the clip would connect directly with the slot 0, as it is indirect line with the same.

The lateral opening 0 furnishes what may be termed a bayonet-lock, whichrequires a lateral movement of the clip upon the bolthead before it canbe moved longitudinally to bring the bolt-head into the socket e.

The bolt-head is projected but little from its support, (as thewindow-frame I I,) and it is obvious that the clip cannot be applied tosuch bolt-head except by placing the clip flat against the window-frameor bolt-support, as shown in Fig. 6, to enter the bolt-'" head into theslot. The clip then requires to be held parallel with the support tomovev the socket e to the bolt-head, after which the clip may be freelyturned to any angle or in any position relative to the bolt-head, asindicated in Fig. 1, and by the relation of the clip to the line 2 2representing the windowframe or bolt-support in Fig. 2.

The formation of the bolt-head with flattened sides and the formation ofthe channel between the sides a of the clip to nearly fit such flattenedsides, as shown in Fig. 7, cause the clip to cramp if bent or drawnlaterally when the bolt-head is in such channel, and such tendency tocramp afiords a great security against accidental displacement of theclip from the bolt-head, as the free swinging of the clip upon thebolt-head would prevent it from assuming aposition in which it could bemoved not only parallel with the window-frame, but parallel with thefiat sides of the bolt, both of which relations are necessary todislodge the clip from the bolt.

From the above description it will be seen that the clip is adapted tooperate with a single bolt-head and assumes any position that the strapor load may require, as is shown in Fig. 1, to pull straight from suchbolt-head, whereas when a clip or support is attached by means of twobolt-heads it is held by the joint operation of such heads close to thewood all the time and is strained laterally by the tension upon thestrap.

In my construction I can make the eye a flush with the bottom side ofthe clip in which the slot 0 is formed, and the pull is then in a directline with the bolt and the eye is not deformed by the strain.

In Fig. 2 the lateral opening f appears to greatly weaken the side ofthe clip; but such opening is formed only in one side, leaving the otherside solid, as shown in Fig. 6, which fully supports the strain upon thesides. By forming the lateral opening in the bottom of the clip, asindicated by the dotted circle f in Fig. 3, the perforation or weakeningof the; sides is wholly avoided. The load thrown upon the clip isimposed upon the outer corners of the bolt and the outer end of thesocket e, as shown in Fig. 2, and to strengthen the socket a cap e isformed over its outer portion and serves as an integral bridge betweenthe sides a to transmit the strain fully thereto.

From the above description it will be seen that complete security fromaccidental displacement is secured by the construction of the clip,security from rupture is secured by the metallic reinforcing of thestrap, a secure attachment of the strap to the belt is secured by makingeach of the eyes E strong enough to support the whole load upon thebelt, and that the attachment at the end of the strap and belt is madedoubly secure by the use of two buckles and the formation of the holesin the strap or belt-tongue to simultaneously engage the twobuckle-tongues. My invention thus affords elements of security not knownin other constructions.

WVhen properly formed, the bolt-head and the socket e form aball-and-socket joint, upon which the clip can turn freely in anydirection, and to secure such operation most perfectly and avoidunnecessary wear of the socket e the under side of the bolt-head isformed spherical, as indicated in Figs. 2 and 7, and thus bears equallyupon the inner side of the socket at the edges of the slot 0. Suchball-and-socket joint affords a more perfect bearing for the strain andsecures greater durability in the wear of the parts.

Having thus set forth the nature of the invention, what is claimedherein is- 1. A safety supporting-clip having the eye a at one end,sides a with longitudinal channel between the same, the longitudinalslot 0 connecting with such channel, with lateral opening adjacent tothe eye a to 1mm, bolt-head, and the channel at theend opposite to theeye a enlarged to form the socket e, to permit the clip to turn upon thebolthead.

2. In a safety supporting device, the combination, with a bolt-headhaving parallel sides, of a supporting-clip having the eye a at one end,the sides a, having channel fitted to the sides of the bolt-head and theslot 0 to clear the neck of the bolt, the slot having a lateral openingto introduce the bolt-head to the channel, and the channel being formedat the end opposite to the eye a with the enlarged socket e to clear thecorners of the bolt,whereby the clip can be turned in any positionthereon.

3. A safety supporting-clip having the eye a at one end, a longitudinalchannel adapted to fit the sides of a single bolt-head, withlongitudinal slot opening into one side of such channel, and having theenlarged socket e at one end of the channel to clear the corners of thebolt-head, and a lateral opening at the other end of the channel tointroduce the bolthead, whereby the bottom of the clip must be held flatupon the support of the bolt to in troduce the bolt-head to the channeland move it to the socket.

at. In a safety supporting device, a safetyclip having the sides a withlongitudinal channel between the same, the bottom b having the eye ctextended in a straight line therefrom and the longitudinal slot 0connecting with the channel and having the enlarged socket e at one end,and the slot having lateral opening adjacent to the eye a to introduce abolt-head, substantially as herein set forth.

5. In a safety supporting device, the combination, with a bolt-headhaving spherical base, of a clip having an eye a at one end, alongitudinal slot to pass the neck of the bolt, with opening adjacent tothe eye to introduce the bolt-head, and at the opposite end of the slota spherical socket adapted to bear upon the spherical surface of thebolt-head, whereby the strain upon the bolt is uniformly distributed inall positions of the clip.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JOHN K. GREEN.

Witnesses:

L. LEE, THOMAS S. CRANE.

